1
1
1
1
2
4
4
5
6
7
8
9
9
A
A
B
D
E
E
E
E
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F